AAVSO Alert Notice 473 T Tauri stars observing campaign November 6, 2012 Darryl Sergison (University of Exeter) has requested AAVSO assistance with a campaign he is organizing on six T Tauri stars. He writes: "In Autumn 2013 I [and my PhD supervisor Tim...

This was a short term campaign, about three months during spring 2011, but a lot of discovers. links to the ARAS amateur survey (by Benjamin Mauclaire) Behavior of the h alpha line of this very rare Oe magnetic star needs a lot of physics to be explained....

A call for observations of the famous symbiotic star, one of the brightest, CH cyg has been launched by Margaritta Karovska. This is to support observations planned for the next two weeks in X ray (CHANDRA) and otical/UV (HST) domains. Observations are...

Symbiotic star ci Cygni is going on eclipse these last weeks with a Mv dropping to 11.4. The period of the system is about 853 days and maximum is awaited for mid November At the same time the system has an ongoing outburst from the disk around the white...